Large-size touch screen automatic laminating device and pressing method

Abstract

The present application relates to touch screen production technical field, especially touch screen automatic laminating equipment and pressing method of large size, the present application is through the setting of guide mechanism, using the horizontal movement of processing platform, the track restriction of cooperation straight slot and inclined slot to movable plate guide rod and bottom plate guide rod, linear motion is converted into transverse closing movement, synchronous drive clamp ejection laminating is completed through the gear and rack meshing of transmission mechanism, the lifting action of pressing plate is used to complete the supplement of upper clamp, without additional independent driving components, the feeding and laminating of upper clamp and lower clamp are realized.

Description

Technical Field

[0001] This invention relates to the field of touch screen manufacturing technology, and in particular to an automated bonding equipment and pressing method for large-size touch screens. Background Technology

[0002] In the manufacturing process of large-size touch screens, the full lamination process is a key process that determines the product's display effect and touch performance. The existing full lamination process mainly involves the assembly of the upper touch screen and the lower display screen, which is achieved by pressing them together with optical adhesive. After the pressing equipment completes the pressing action, the optical adhesive is only in the initial bonding state and has not yet fully cured. At this time, in order to ensure that the adhesive reacts fully and reaches the predetermined bonding strength, the bonded components must be continuously pressed. The traditional pressing method usually adopts the mode of post-installation fixture, that is, after the screen completes the pressing action in the pressing equipment, it needs to be removed from the pressing cavity and then transferred to a special pressing station, where the pressing fixture is installed manually or by a robot. However, in actual use, compared with the small amount of adhesive used in small-sized touch screens, large-sized touch screens have the significant characteristics of large coating area, thick adhesive layer and a surge in total amount of adhesive. This leads to significant volume shrinkage when the adhesive undergoes curing reaction during the pressure holding stage, which easily overcomes the weak adhesive force of the incompletely cured adhesive layer. Since the screen is not secured by pressure clamps during the process of being removed from the pressing equipment and transported to the installation and pressure holding station, slight vibrations of the conveyor belt or tilting during handling can easily cause the touch screen and the display screen to slide or become misaligned. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and to propose an automated bonding device and pressing method for large-size touch screens.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The device includes a bonding equipment body and a touch screen body. The bonding equipment body includes a processing table that supports the reciprocating movement of the touch screen body and a pressing mechanism for pressing the touch screen body. The touch screen body includes a display screen and a touch sensor plate that are aligned and placed on the processing table. The touch screen body also includes a lower clamp and an upper clamp that are respectively installed on the display screen and the touch sensor plate. The lower clamp and the upper clamp are respectively set on the processing table and the pressing mechanism through a loading mechanism. The loading mechanism includes a lower clamping box that is set on both sides of the processing table via a guide mechanism. The guide mechanism includes a movable plate that is set on both sides of the processing table. The lower clamping box is set on the movable plate. When the processing table moves horizontally downwards towards the pressing mechanism, the movable plate moves closer to the processing table, so that the lower clamping box drives the lower clamping fixture to be nested on the surface of the display screen. The loading mechanism also includes upper clamping boxes disposed on both sides of the pressing mechanism. When the pressure plate is pressed down, the upper clamping box is attached to the touch sensor plate and connected to the lower clamping box. After the pressure plate is lifted, the display screen and the touch sensor plate are kept under pressure.

[0005] Preferably, the lower clamp box includes a first stacking box disposed on the movable plate, and the lower clamps are stacked in the first stacking box and removed through an opening at the top of the first stacking box; The bottom of the first stacking box is provided with a fixed seat, and a first threaded rod is provided through the middle of the fixed seat. The end of the first threaded rod is provided with a first push plate that fits with the lower clamp.

[0006] Preferably, the fixing seat is connected to the first threaded rod via a one-way mechanism; The one-way mechanism includes an outer ring rotatably embedded in a fixed base and a second internal threaded ring rotatably embedded in the outer ring, the second internal threaded ring being engaged and nested on the surface of the first threaded rod; The second internal threaded ring is provided with a first ratchet tooth, and the inner wall of the outer ring is provided with a first ratchet wheel that cooperates with the first ratchet tooth.

[0007] Preferably, the bonding equipment body further includes a pressure plate disposed below the pressing mechanism, and the pressing mechanism is connected to the pressure plate via an upper clamping box; The upper clamp box includes a positioning plate disposed on the pressure plate, and a second stacking box is disposed on the positioning plate. The upper clamps are stacked and placed in the second stacking box and moved out through the opening at the bottom end of the second stacking box. The opening at the bottom end of the second stacking box is narrowed so that the upper clamps cannot be moved out by themselves. The upper clamp box also includes a second threaded rod rotatably mounted on the pressing mechanism. A first internal threaded ring is fitted on the surface of the second threaded rod, and a second push plate that fits against the upper clamp is mounted on the first internal threaded ring. The bottom of the second threaded rod is connected to a straight rod with the same outer diameter.

[0008] Preferably, the positioning plate is connected to the second threaded rod via another one-way mechanism; The other one-way mechanism includes another outer ring fixedly mounted on the positioning plate and another second internal threaded ring rotatably embedded in the other outer ring, the other second internal threaded ring meshing and nesting on the surface of the second threaded rod; The other second internal threaded ring is provided with another first ratchet, and the inner wall of the other outer ring is provided with another first ratchet that engages with the other first ratchet.

[0009] Preferably, the bonding equipment body further includes a conveying mechanism for driving the processing table to move, and a mounting base is provided on the conveying mechanism. The movable plate is slidably nested in the mounting base, and the two movable plates are slidably connected to the base plate through a limiting rail. The base plate has a straight groove and an inclined groove on its surface. A base plate guide rod connected to the processing table is installed through the straight groove, and a movable plate guide rod connected to the movable plate is installed through the inclined groove. The base plate surface has a pre-reserved cavity for the lower clamp box to pass through.

[0010] Preferably, the outer ring rotatably embedded in the fixed base is driven to rotate by a transmission mechanism; The transmission mechanism includes a slide rail extending from below the inclined groove, and a rack is provided at the inner edge of the slide rail; Additionally, the drive wheel, which is rotatably mounted at the end of the guide rod of the movable plate, meshes with the rack; The drive wheel installed at the end of the drive wheel and the drive wheel embedded on the outer ring are fitted with a drive belt.

[0011] Preferably, the ends of the plurality of first threaded rods are all connected to the connecting plate.

[0012] Preferably, the lower clamp and the upper clamp are locked together by a locking mechanism, which includes a slot mounted on the lower clamp and a pin mounted on the upper clamp. A rotating rod is rotatably installed inside the slot, and the surface of the rotating rod is provided with spiral patterns and a second ratchet is installed at the bottom. A movable seat is installed at the bottom of the slot, and a second ratchet is provided inside the movable seat to cooperate with the second ratchet. The surface of the movable seat is provided with a positioning groove, and the inner wall of the groove is provided with a positioning block that cooperates with the positioning groove. The bottom of the pin has a hole that mates with the rotating rod, and the hole has a spiral groove that mates with the spiral pattern. The top of the pin has a countersunk hole for other pins to be inserted.

[0013] An automated lamination method for large-size touch screens includes the following steps: S1: Place the display screen on the processing table, apply glue to the surface of the display screen, and then align and place the touch sensor panel above the display screen to complete the workpiece loading; S2: Start the conveyor mechanism, drive the processing table to move horizontally, and move the display screen and touch sensor panel to the pressing workpiece below the pressure plate; S3: During the movement of the processing table, the guide mechanism, through the cooperation of the inclined groove and the guide rod of the movable plate, drives the two movable plates to move laterally closer together; at the same time, the drive wheel of the transmission mechanism meshes with the rack and pinion to rotate, and drives the one-way mechanism through the transmission belt to make the first threaded rod feed linearly, push the lower fixture to the top opening of the first stacking box, and then horizontally attach it to the two sides and four corners of the display screen along with the movable plate. S4: The pressing mechanism pushes the pressure plate down, the upper clamp fits against the touch sensor panel, the locking mechanism's pin is inserted into the slot, the rotating rod rotates under the guidance of the spiral groove and spiral thread, and the upper and lower clamps are rigidly locked by the one-way meshing of the second ratchet and the second ratchet wheel, and the glue spreads and flows under pressure; S5: During the process of the pressure plate rising and resetting, the one-way mechanism of the upper clamp box enters the locking state, drives the second threaded rod to rotate, and causes the first internal threaded ring to drive the second push plate to feed downward, pushing an upper clamp to the bottom opening of the second stacking box to complete the material replenishment; S6: The workpiece after locking and holding pressure on the processing table returns to the loading position, and the lower clamp disengages from the first stacking box. During the return, the one-way mechanism rotates freely, and the lower clamp will not fall back. S7: The lower clamp and the upper clamp maintain a rigid lock, continuously providing uniform pressure until the adhesive is completely cured; S8: Rotate and pull the movable seat outward to disengage the second ratchet from the second ratchet tooth, release the one-way lock, separate the lower clamp and the upper clamp, and remove the finished product.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By using the set guide mechanism and the horizontal movement of the processing table, the linear motion is converted into a lateral approaching motion by the trajectory restriction of the guide rod of the movable plate and the guide rod of the bottom plate in conjunction with the straight groove and the inclined groove. At the same time, the gear and rack of the transmission mechanism synchronously drive the lower clamp to push out and fit, and the upper clamp is synchronously fed in by the lifting action of the pressure plate. No additional independent drive components are required to realize the feeding and fitting of the upper and lower clamps. 2. Through the locking mechanism, when the lower and upper clamps are engaged, the pin on the upper clamp is inserted into the slot on the lower clamp, and the rotating rod in the slot is inserted into the hole at the bottom of the pin. The spiral pattern on the surface of the rotating rod engages with the spiral groove in the hole. Under the guidance of the spiral pattern and spiral groove, the rotating rod rotates, which drives the second ratchet at the bottom of the rotating rod to rotate. Since the second ratchet and the second ratchet wheel are engaged in a one-way manner, the second ratchet wheel will not affect the rotation of the rotating rod and will prevent the rotating rod from rotating in the opposite direction. This prevents the pin from disengaging from the slot in the opposite direction, so that the lower and upper clamps form a stable rigid lock at the sides and four corners of the display screen and the touch sensor, providing a uniform and continuous pressure holding force and avoiding problems such as loosening or uneven pressure during the pressure holding process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an automated bonding device for large-size touch screens proposed in this invention. Figure 2 This is a three-dimensional structural diagram of the pressing mechanism on the body of the bonding device proposed in this invention; Figure 3This is a three-dimensional structural diagram of the conveying mechanism and processing table on the body of the bonding equipment proposed in this invention; Figure 4 This is a three-dimensional structural diagram of the large-size screen body, upper clamp, and lower clamp proposed in this invention. Figure 5 This is a three-dimensional structural diagram of the large-size screen body proposed in this invention as it moves horizontally with the processing table. Figure 6 This is a partial three-dimensional structural schematic diagram of the guiding mechanism proposed in this invention; Figure 7 This is a three-dimensional structural diagram of the base plate and movable plate in the combined state proposed in this invention. Figure 8 This is a three-dimensional structural diagram of the base plate and movable plate in the unfolded state proposed in this invention. Figure 9 This is a three-dimensional structural diagram of the lower clamp box portion in the loading mechanism proposed in this invention; Figure 10 This is a partial three-dimensional structural diagram of the lower clamp box proposed in this invention; Figure 11 This is a three-dimensional structural diagram of the upper clamp box portion in the loading mechanism proposed in this invention; Figure 12 This is a partial three-dimensional cross-sectional structural diagram of the upper clamp box proposed in this invention; Figure 13 This is a three-dimensional structural diagram of the unidirectional mechanism proposed in this invention; Figure 14 This is a three-dimensional cross-sectional structural diagram of the unidirectional mechanism proposed in this invention; Figure 15 for Figure 9 Enlarged structural diagram at point A; Figure 16 This is a partial three-dimensional structural schematic diagram of the transmission mechanism proposed in this invention; Figure 17 This is a schematic diagram of the first three-dimensional disassembled structure of the upper clamp, lower clamp, and locking mechanism proposed in this invention; Figure 18 This is a schematic diagram of the second three-dimensional disassembled structure of the upper clamp, lower clamp, and locking mechanism proposed in this invention; Figure 19 This is a three-dimensional cross-sectional structural diagram of the lower clamp proposed in this invention; Figure 20 This is a three-dimensional cross-sectional structural diagram of the upper clamp proposed in this invention; Figure 21 for Figure 17 Enlarged structural diagram at point B; Figure 22This is a schematic diagram of the feeding steps of an automated bonding equipment for large-size touch screens proposed in this invention; Figure 23 This is a schematic diagram of the pressing steps of an automated bonding device for large-size touch screens proposed in this invention; Figure 24 This is a schematic diagram of the unloading steps of an automated bonding equipment for large-size touch screens proposed in this invention.

[0016] In the picture: 10. Fitting equipment body; 11. Conveying mechanism; 12. Pressing mechanism; 13. Processing table; 14. Pressure plate; 20. Touchscreen body; 21. Display screen; 22. Touch sensor panel; 23. Lower clamp; 24. Upper clamp; 30. Guiding mechanism; 31. Base plate; 32. Receiving cavity; 33. Straight groove; 34. Inclined groove; 35. Base plate guide rod; 36. Movable plate guide rod; 37. Movable plate; 37. Limiting rail; 38. Mounting base; 40. Loading mechanism; 41. Lower clamp box; 411. First stacking box; 412. Fixed seat; 413. First threaded rod; 414. First push plate; 415. Connecting plate; 42. Upper clamp box; 421. Positioning plate; 422. Second stacking box; 423. Second push plate; 424. First internal threaded ring; 425. Second threaded rod; 426. Straight rod; 43. Guide rail; 44. Guide groove; 50. One-way mechanism; 51. Outer ring; 52. Second internal threaded ring; 53. First ratchet; 54. First ratchet wheel; 60. Transmission mechanism; 61. Slide rail; 62. Drive wheel; 63. Transmission wheel; 64. Transmission belt; 65. Rack and pinion; 70. Locking mechanism; 71. Slot; 711. Rotating rod; 712. Spiral groove; 713. Second ratchet; 714. Movable seat; 715. Second ratchet; 716. Positioning groove; 717. Positioning block; 72. Pin; 721. Countersunk hole; 722. Spiral groove. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] Reference Figure 1 - Figure 10 An automated bonding equipment and pressing method for a large-size touch screen includes a bonding equipment body 10 and a touch screen body 20. The bonding equipment body 10 includes a processing table 13 for supporting the touch screen body 20 and a pressing mechanism 12 for pressing the touch screen body 20. The processing table 13 is reciprocated by conveying mechanisms 11 arranged on both sides. The pressing mechanism 12 is installed on the top of the processing table 13, and a pressure plate 14 for applying pressure is installed at the end of the pressing mechanism 12. The touch screen body 20 includes a display screen 21 and a touch sensor 22 aligned and placed on a processing table 13. By activating the conveying mechanism 11, the processing table 13 moves the display screen 21 and the touch sensor 22 to below the pressure plate 14. Then, the pressing mechanism 12 is activated, which pushes the pressure plate 14 down and applies pressure evenly to the touch sensor 22. The glue that was pre-applied between the display screen 21 and the touch sensor 22 quickly spreads and flows outwards under pressure, filling the gap between the display screen 21 and the touch sensor 22.

[0020] Reference Figure 2 - Figure 4 The touch screen body 20 also includes a lower clamp 23 and an upper clamp 24 respectively installed on the display screen 21 and the touch sensor plate 22. The lower clamp 23 and the upper clamp 24 are locked together by a locking mechanism 70. Preferably, the lower clamp 23 and the upper clamp 24 are both provided with strip shape and L shape, and are respectively provided on both sides and four corners of the display screen 21 and the touch sensor plate 22 to achieve the purpose of providing a stable pressure holding effect.

[0021] Reference Figure 17 - Figure 21 The locking mechanism 70 includes a slot 71 mounted on the lower clamp 23 and a pin 72 mounted on the upper clamp 24. A rotating rod 711 is rotatably disposed in the slot 71, and the surface of the rotating rod 711 is provided with a spiral pattern 712 and a second ratchet 713 is installed at the bottom. A movable seat 714 is installed at the bottom of the slot 71, and a second ratchet 715 that cooperates with the second ratchet 713 is provided inside the movable seat 714. The bottom of the pin 72 is provided with a hole that cooperates with the rotating rod 711, and a spiral groove 722 that cooperates with the spiral pattern 712 is provided in the hole. When the lower clamp 23 and the upper clamp 24 are engaged, the pin 72 on the upper clamp 24 is inserted into the slot 71 on the lower clamp 23. Simultaneously, the rotating rod 711 inside the slot 71 is inserted into the hole at the bottom of the pin 72. The spiral pattern 712 on the surface of the rotating rod 711 engages with the spiral groove 722 inside the hole. Guided by the spiral pattern 712 and the spiral groove 722, the rotating rod 711 rotates, causing the second ratchet 713 at the bottom of the rotating rod 711 to rotate. Since the second ratchet 713 and the second ratchet 715 are in a one-way engagement, the second ratchet 715 will not affect... The rotation of the rotating rod 711 prevents it from rotating in the opposite direction, thus preventing the pin 72 from dislodging from the slot 71. This allows the lower clamp 23 and the upper clamp 24 to form a stable rigid lock at the sides and four corners of the display screen 21 and the touch sensor 22, providing a uniform and continuous pressure-holding force. This avoids problems such as loosening or uneven pressure during the pressure-holding process. At the same time, the depth to which the pin 72 is inserted into the slot 71 varies with the thickness of the display screen 21 and the touch sensor 22. It can be locked after being inserted at any depth to achieve the purpose of covering different thicknesses.

[0022] Furthermore, the surface of the movable seat 714 is provided with a positioning groove 716, which consists of an annular groove and an open groove. The inner wall of the slot 71 is provided with a positioning block 717 that cooperates with the positioning groove 716. When it is necessary to release the connection between the lower clamp 23 and the upper clamp 24, the movable seat 714 is rotated to make the positioning groove 716 slide under the restriction of the positioning block 717. When the positioning block 717 corresponds to the position of the open groove of the positioning groove 716, pulling the movable seat 714 outward can drive the second ratchet 715 to disengage from the second ratchet 713. At this time, the one-way rotation restriction on the rotating rod 711 is released, and the lower clamp 23 and the upper clamp 24 can be normally separated and unlocked.

[0023] To ensure that the lower clamp 23 and upper clamp 24 maintain pressure and the pressure plate 14 applies pressure to the touch sensor 22, the two independent actions can be performed synchronously, as shown in the following figure. Figure 5 - Figure 10 The lower clamp 23 and the upper clamp 24 are respectively set on the processing table 13 and the pressing mechanism 12 through the loading mechanism 40. The loading mechanism 40 includes a lower clamp box 41 set on both sides of the processing table 13 through the guide mechanism 30. The lower clamp box 41 includes a first stack box 411 disposed on the movable plate 37. The lower clamp 23 is stacked in the first stack box 411 and removed through the opening at the top of the first stack box 411. A fixing seat 412 is provided at the bottom of the first stack box 411, and a first threaded rod 413 is provided through the middle of the fixing seat 412. A first push plate 414 that fits against the lower clamp 23 is provided at the end of the first threaded rod 413. When the first threaded rod 413 is fed linearly, the first threaded rod 413 pushes the stacked lower clamp 23 in the first stacking box 411 to move through the first push plate 414 at the end. The lower clamp 23 moves to the opening position at the top of the first stacking box 411, so that the lower clamp 23 can fit against the surface of the display screen 21. Repeating the above operation can complete the automatic feeding of the lower clamp 23.

[0024] Reference Figure 10 , Figure 13 and Figure 14 In order to control the linear feed of the first threaded rod 413, the fixed seat 412 is connected to the first threaded rod 413 through a one-way mechanism 50. The one-way mechanism 50 includes an outer ring 51 rotatably embedded in the fixed seat 412 and a second inner threaded ring 52 rotatably embedded in the outer ring 51. The second inner threaded ring 52 meshes and nests on the surface of the first threaded rod 413. A first ratchet 53 is provided on the second inner threaded ring 52, and a first ratchet 54 that cooperates with the first ratchet 53 is provided on the inner wall of the outer ring 51. When the outer ring 51 rotates in the locking direction of the first ratchet 54, the first ratchet 54 engages with the first ratchet tooth 53 on the second internal thread ring 52, enabling the outer ring 51 to drive the second internal thread ring 52 to rotate. At this time, the second internal thread ring 52 engages and drives the first thread rod 413 to perform a linear feed action, completing the ejection action of the lower clamp 23. When the outer ring 51 rotates in the opposite direction, the first ratchet 54 slides along the tooth surface of the first ratchet tooth 53 and cannot drive the second internal thread ring 52 to rotate synchronously. At this time, the first thread rod 413 will not retract with the outer ring 51 in reverse, thus preventing the lower clamp 23 from falling back.

[0025] Reference Figure 11 and Figure 12 As the lower clamp 23 moves to fit against the display screen 21, the upper clamp 24 completes the filling as the pressing mechanism 12 is lifted. The filling mechanism 40 also includes an upper clamp box 42 disposed on both sides of the pressing mechanism 12. The pressing mechanism 12 is connected to the pressure plate 14 through the upper clamp box 42. The upper clamp box 42 includes a positioning plate 421 disposed on the pressure plate 14. A second stacking box 422 is disposed on the positioning plate 421. The upper clamp 24 is stacked in the second stacking box 422 and moved out through the opening at the bottom of the second stacking box 422. The upper clamp box 42 also includes a second threaded rod 425 rotatably disposed on the pressing mechanism 12. A first internal threaded ring 424 is meshed on the surface of the second threaded rod 425, and a second push plate 423 that fits against the upper clamp 24 is installed on the first internal threaded ring 424. In order to control the rotation of the second threaded rod 425, the positioning plate 421 is connected to the second threaded rod 425 through another one-way mechanism 50. The other one-way mechanism 50 includes another outer ring 51 fixedly installed on the positioning plate 421 and another second inner threaded ring 52 rotatably embedded in the other outer ring 51. The other second inner threaded ring 52 meshes and nests on the surface of the second threaded rod 425. Another first ratchet 53 is provided on the other second inner threaded ring 52. Another first ratchet 54 that cooperates with the other first ratchet 53 is provided on the inner wall of the other outer ring 51. With this design, when the pressure plate 14 is pressed down, the upper clamp 24 is attached to the touch sensor plate 22 and connected to the lower clamp 23. After the pressure plate 14 is lifted, it maintains pressure on the display screen 21 and the touch sensor plate 22. During the pressing process of the pressure plate 14, the pressure plate 14 drives the second stacking box 422 and the outer ring 51 to descend synchronously through the positioning plate 421. Since the other first ratchet 54 slides along the tooth surface of the other first ratchet 53, the other outer ring 51 can drive the other second internal threaded ring 52 to rotate under the meshing of the other second threaded rod 425. The other second threaded rod 425 cannot drive the other first internal threaded ring 424 to move by rotation. Therefore, the other first internal threaded ring 424 cannot drive the other second push plate 423 to move, and the position of the upper clamp 24 does not change. When the pressure plate 14 is raised, the other outer ring 51 moves upward synchronously with the positioning plate 421. At this time, the other first ratchet 54 and the other first ratchet 53 engage and enter the locking state. At this time, the other second internal threaded ring 52 drives the other second threaded rod 425 to rotate synchronously during the upward process. The rotating other second threaded rod 425 can drive the other first internal threaded ring 424 to feed downward slightly, and drive the second push plate 423 to push the stacked upper clamp 24 downward. The new upper clamp 24 is accurately pushed to the opening position at the bottom of the second stacking box 422, completing the filling of the second stacking box 422 for the next pressing process.

[0026] It should be noted that, in order to limit the rotational stroke of the second threaded rod 425 and avoid continuously driving the second threaded rod 425 to rotate through the second internal threaded ring 52 during the lifting of the pressure plate 14, a straight rod 426 with the same outer diameter is connected to the bottom of the second threaded rod 425. The meshing area between the second internal threaded ring 52 and the second threaded rod 425 can only provide a downward feed distance of one upper clamp 24 thickness to the second push plate 423 to avoid over-push and over-push. After the pressure plate 14 descends below the meshing area, it disengages from the second threaded rod 425 and re-engages during the lifting process.

[0027] To prevent the upper clamp 24 loaded in the second stacking box 422 from falling off under gravity, the bottom opening of the second stacking box 422 is narrowed so that the upper clamp 24 cannot be moved out by itself. The top of the pin 72 is provided with a countersunk hole 721 for other pins 72 to be inserted, so as to realize the stacking of multiple upper clamps 24. When the pin 72 is inserted into the slot 71 and locked, the pulling force generated when the pressure plate 14 rises is sufficient to cause the upper clamp 24 to undergo a slight deformation, so as to pull the upper clamp 24 out of the second stacking box 422 and release the stacking of adjacent upper clamps 24.

[0028] Preferred, refer to Figure 12 and Figure 18 Guide rails 43 are provided on the inner walls of the first stacking box 411 and the second stacking box 422. Guide grooves 44 that fit into the guide rails 43 are provided on the lower clamp 23 and the upper clamp 24. The guide rails 43 are interrupted at the opening positions of the first stacking box 411 and the second stacking box 422. The lower clamps 23 and the upper clamps 24 that reach the opening positions no longer fit into the guide rails 43 through the guide grooves 44. The lower clamps 23 and the upper clamps 24 can be disengaged from the first stacking box 411 and the second stacking box 422.

[0029] Reference Figure 6 - Figure 8 Since the display screen 21 and the touch sensor 22 are moved horizontally to the bottom of the pressure plate 14 by the conveying mechanism 11, the lower clamp 23 needs to be attached to the surface of the display screen 21 by translation. In order to achieve this effect, the lower clamp box 41 is set on the guide mechanism 30. The guide mechanism 30 includes movable plates 37 on both sides of the processing table 13. When the processing table 13 is translated downwards to the pressing mechanism 12, the movable plates 37 move closer to the processing table 13. The guiding mechanism 30 also includes a mounting base 38 disposed on the conveying mechanism 11. The movable plate 37 is slidably nested in the mounting base 38. The two movable plates 37 are slidably connected to the base plate 31 through the limiting rail 371. The surface of the base plate 31 is provided with a straight groove 33 and an inclined groove 34. A base plate guide rod 35 connected to the processing table 13 is disposed through the straight groove 33. A movable plate guide rod 36 connected to the movable plate 37 is disposed through the inclined groove 34. Through this design, during the horizontal movement of the processing table 13, the bottom plate guide rod 35 installed at the bottom of the processing table 13 can move synchronously in a straight line along the straight groove 33 on the bottom plate 31. At the same time, the movable plate guide rod 36 installed at the bottom of the movable plate 37 slides along the trajectory of the inclined groove 34. Under the combined action of the lateral guidance of the inclined groove 34 and the movement direction restriction of the limiting rail 371, the horizontal linear movement of the processing table 13 is converted into the lateral movement of the movable plate 37. According to the change in the movement direction of the processing table 13, the movable plate 37 can drive the lower clamp box 41 to move closer to the processing table 13, or drive the lower clamp box 41 away from the processing table 13. The lower clamp 23 at the top opening of the first stack box 411 can move horizontally and fit against the preset positions on both sides and four corners of the display screen 21 without the need for additional independent drive components.

[0030] In order to drive multiple first push plates 414 to rise synchronously, refer to Figure 9 and Figure 10 Multiple first threaded rods 413 are connected to the connecting plate 415 at their ends. At this time, except for the first threaded rods 413 coaxial with the transmission wheel 63 and the one-way mechanism 50, the other first threaded rods 413 can be replaced with ordinary push rods. When the transmission wheel 63 rotates and the outer ring 51 drives the first threaded rods 413 to rise, the first threaded rods 413 drive the other push rods and the first push plate 414 installed at the end of the push rods to rise synchronously through the connecting plate 415. The lower clamps 23 at multiple positions can complete the filling synchronously.

[0031] It should be noted that the surface of the base plate 31 has a cavity 32 for the lower clamp box 41 to pass through, so as to avoid the lower clamp box 41 from interfering with the base plate 31 during the movement of the movable plate 37.

[0032] See Figure 15 and Figure 16 In order to achieve synchronous control of the lower clamp 23 moving out of the first stack box 411 during the loading and unloading of the display screen 21 and the touch sensor 22 by the processing table 13, the outer ring 51 embedded in the fixed base 412 is driven to rotate by the transmission mechanism 60. The transmission mechanism 60 includes a slide rail 61 extending from below the inclined groove 34, a rack 65 provided at the inner edge of the slide rail 61, and a drive wheel 62 rotatably provided at the end of the guide rod 36 of the movable plate. The drive wheel 62 meshes with the rack 65. The transmission wheel 63 installed at the end of the drive wheel 62 and the transmission wheel 63 embedded in the outer ring 51 are fitted with a transmission belt 64. When the processing table 13 moves the display screen 21 and the touch sensor 22 downwards towards the pressure plate 14, the movable plate guide rod 36 at the bottom of the movable plate 37 slides along the inclined groove 34. At the same time, the movable plate guide rod 36 drives the drive wheel 62 at its end to move synchronously along the track of the slide rail 61. At this time, the drive wheel 62 meshes with the rack 65 on the inner edge of the slide rail 61 and drives the transmission wheel 63 coaxially mounted on the drive wheel 62 to rotate. Then, through the transmission belt 64, the transmission wheel 63 sleeved on the outer ring 51 is driven to rotate, thereby driving the outer ring 51 to rotate and controlling the first threaded rod 413 to feed linearly, pushing the lower clamp 23 to move to the top opening of the first stacking box 411. At the same time, the movable plate 37 drives the lower clamp 23, which reaches the top opening of the first stacking box 411, to be horizontally attached to the display screen 21. When the pressure plate 14 is raised, the lower clamp 23 and the upper clamp 24 are locked together. As the processing table 13 moves the display screen 21 and the touch sensor 22 out from under the pressure plate 14, the lower clamp 23 and the upper clamp 24 move with the movable plate 37, causing the lower clamp 23 to disengage from the first stacking box 411. At this time, the driving force generated by the drive wheel 62 and the rack 65 can only drive the outer ring 51 to rotate freely and cannot drive the first threaded rod 413 to feed upward, thus avoiding interference between the lower clamp 23 installed on the display screen 21 and the touch sensor 22 and the lower clamp 23 inside the first stacking box 411.

[0033] The processing table 13 and the movable plate 37 are completely returned to their initial positions. As they move back down to the pressure plate 14, the new lower clamp 23 is simultaneously ejected and filled.

[0034] See Figure 22 - Figure 24 This application also provides an automated pressing method for large-size touch screens, including the following steps: S1: Place the display screen 21 on the processing table 13, apply glue to the upper surface of the display screen 21, and then place the touch sensor 22 above the display screen 21 to complete the workpiece loading. S2: Start the conveyor mechanism 11, drive the processing table 13 to move horizontally, and move the display screen 21 and the touch sensor 22 to the pressing workpiece below the pressure plate 14; S3: During the movement of the processing table 13, the bottom plate guide rod 35 moves linearly along the straight groove 33, and the movable plate guide rod 36 slides along the inclined groove 34, converting the horizontal movement of the processing table 13 into the lateral closing movement of the movable plate 37. At the same time, the drive wheel 62 rolls along the rack 65, and drives the outer ring 51 to rotate through the transmission wheel 63 and the transmission belt 64. The first ratchet 54 engages and locks with the first ratchet tooth 53, driving the second internal thread ring 52 to rotate, so that the first thread rod 413 is fed linearly. The first push plate 414 pushes the lower clamp 23 stacked in the first stacking box 411 to the top opening. The movable plate 37 drives the lower clamp box 41 to close, so that the lower clamp 23 is horizontally attached to the two sides and four corners of the display screen 21 at the preset positions. S4: After the processing table 13 reaches the pressing station, the pressing mechanism 12 is activated, pushing the pressure plate 14 down. The upper clamp 24 at the bottom opening of the second stacking box 422 is pressed down and attached to the upper surface of the touch sensor plate 22. The pin 72 is inserted into the slot 71, and the rotating rod 711 is embedded in the bottom hole of the pin 72. The spiral pattern 712 and the spiral groove 722 mesh and guide the rotating rod 711 to rotate, which drives the bottom second ratchet 713 to rotate. The second ratchet 715 meshes with the second ratchet 713 in one direction, so that the rotating rod 711 cannot rotate in the opposite direction and the pin 72 cannot be dislodged from the slot 71. The lower clamp 23 and the upper clamp 24 form a rigid lock on both sides and four corners, providing a continuous and uniform pressure holding force for the display screen 21 and the touch sensor plate 22. The glue extends and flows under pressure, filling the gaps. S5: After pressing is completed, the pressing mechanism 12 drives the pressure plate 14 to rise and reset; the pressure plate 14 drives the outer ring 51 to rise synchronously through the positioning plate 421, the first ratchet 54 and the first ratchet tooth 53 enter the locking state, when the second internal thread ring 52 rises, it drives the second thread rod 425 to rotate synchronously, driving the first internal thread ring 424 to feed downward slightly, and pushes the upper clamp 24 stacked in the second stack box 422 to the bottom opening through the second push plate 423, completing the loading of the upper clamp 24 for the next pressing. The straight rod 426 at the bottom of the second thread rod 425 limits the feed distance to the thickness of one upper clamp 24 to avoid over-pushing or over-pushing. S6: The conveyor mechanism 11 is driven in reverse, and the processing table 13 drives the display screen 21 and the touch sensor 22, which have completed locking and pressure holding, to return from the pressing station to the loading and unloading position. The lower clamp 23 moves synchronously with the workpiece and disengages from the first stacking box 411. During the retraction process, the drive wheel 62 rotates in reverse, only driving the outer ring 51 to rotate freely. The first threaded rod 413 does not retract, thus preventing the loaded lower clamp 23 from falling back. S7: The lower clamp 23 and the upper clamp 24 are rigidly locked together, and in the subsequent transfer process, they continuously provide uniform and stable pressure to the display screen 21 and the touch sensor 22 until the glue is completely cured. S8: After the glue has cured, rotate the movable seat 714 so that the straight groove part of the positioning groove 716 is aligned with the positioning block 717. Pull the movable seat 714 outward to drive the second ratchet 715 to disengage from the second ratchet 713, release the one-way rotation restriction of the rotating rod 711, separate the lower clamp 23 and the upper clamp 24, and take out the finished touch screen body 20 after bonding.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A large-size touch screen automated bonding equipment, comprising a bonding equipment body (10) and a touch screen body (20), wherein the bonding equipment body (10) includes a processing table (13) for carrying the reciprocating movement of the touch screen body (20) and a pressing mechanism (12) for pressing the touch screen body (20), and the touch screen body (20) includes a display screen (21) and a touch sensor plate (22) aligned and placed on the processing table (13), characterized in that: The touch screen body (20) also includes a lower clamp (23) and an upper clamp (24) respectively installed on the display screen (21) and the touch sensor plate (22). The lower clamp (23) and the upper clamp (24) are respectively set on the processing table (13) and the pressing mechanism (12) through the loading mechanism (40); The loading mechanism (40) includes a lower clamping box (41) disposed on both sides of the processing table (13) via a guide mechanism (30). The guide mechanism (30) includes a movable plate (37) disposed on both sides of the processing table (13). The lower clamping box (41) is disposed on the movable plate (37). When the processing table (13) moves horizontally downward toward the pressing mechanism (12), the movable plate (37) moves toward the processing table (13), causing the lower clamping box (41) to drive the lower clamp (23) to be nested on the surface of the display screen (21). The loading mechanism (40) also includes an upper clamp box (42) disposed on both sides of the pressing mechanism (12). When the pressure plate (14) is pressed down, the upper clamp (24) is attached to the touch sensor plate (22) and connected to the lower clamp (23). After the pressure plate (14) is lifted, it maintains pressure on the display screen (21) and the touch sensor plate (22).

2. The automated bonding equipment for large-size touch screens according to claim 1, characterized in that, The lower clamp box (41) includes a first stack box (411) disposed on the movable plate (37), and the lower clamp (23) is stacked in the first stack box (411) and removed through the opening at the top of the first stack box (411); The first stack box (411) is provided with a fixed seat (412) at the bottom, and a first threaded rod (413) is provided through the middle of the fixed seat (412), and a first push plate (414) is provided at the end of the first threaded rod (413) to fit with the lower clamp (23).

3. The automated bonding equipment for large-size touch screens according to claim 2, characterized in that, The fixed base (412) is connected to the first threaded rod (413) via a one-way mechanism (50); The one-way mechanism (50) includes an outer ring (51) rotatably embedded in a fixed base (412) and a second internal threaded ring (52) rotatably embedded in the outer ring (51), the second internal threaded ring (52) meshing and nesting on the surface of the first threaded rod (413); The second internal threaded ring (52) is provided with a first ratchet (53), and the inner wall of the outer ring (51) is provided with a first ratchet (54) that cooperates with the first ratchet (53).

4. The automated bonding equipment for large-size touch screens according to claim 2, characterized in that, The bonding equipment body (10) also includes a pressure plate (14) disposed below the pressing mechanism (12), and the pressing mechanism (12) is connected to the pressure plate (14) through the upper clamp box (42); The upper clamp box (42) includes a positioning plate (421) disposed on the pressure plate (14), and a second stacking box (422) is disposed on the positioning plate (421). The upper clamps (24) are stacked in the second stacking box (422) and removed through the opening at the bottom of the second stacking box (422). The opening at the bottom of the second stacking box (422) is narrowed so that the upper clamps (24) cannot be removed by themselves. The upper clamp box (42) further includes a second threaded rod (425) rotatably mounted on the pressing mechanism (12), the surface of the second threaded rod (425) is fitted with a first internal threaded ring (424), and a second push plate (423) that fits against the upper clamp (24) is mounted on the first internal threaded ring (424). The bottom of the second threaded rod (425) is connected to a straight rod (426) with the same outer diameter.

5. The automated bonding equipment for large-size touch screens according to claim 4, characterized in that, The positioning plate (421) is connected to the second threaded rod (425) via another one-way mechanism (50); The other one-way mechanism (50) includes another outer ring (51) fixedly installed on the positioning plate (421) and another second internal threaded ring (52) rotatably embedded in the other outer ring (51), the other second internal threaded ring (52) meshing and nesting on the surface of the second threaded rod (425); Another first ratchet (53) is provided on the other second internal thread ring (52), and another first ratchet (54) is provided on the inner wall of the other outer ring (51) to cooperate with the other first ratchet (53).

6. The automated bonding equipment for large-size touch screens according to claim 2, characterized in that, The bonding equipment body (10) also includes a conveying mechanism (11) for driving the processing table (13) to move. A mounting base (38) is provided on the conveying mechanism (11). Movable plates (37) are slidably nested in the mounting base (38). The two movable plates (37) are slidably connected to the base plate (31) through a limiting rail (371). The bottom plate (31) has a straight groove (33) and an inclined groove (34) on its surface. A bottom plate guide rod (35) connected to the processing table (13) is installed through the straight groove (33), and a movable plate guide rod (36) connected to the movable plate (37) is installed through the inclined groove (34). The bottom plate (31) has a cavity (32) reserved on its surface for the lower clamp box (41) to pass through.

7. The automated bonding equipment for large-size touch screens according to claim 3, characterized in that, The outer ring (51) that is rotatably embedded in the fixed base (412) is driven to rotate by the transmission mechanism (60); The transmission mechanism (60) includes a slide rail (61) extending from below the inclined groove (34), and a rack (65) is provided at the inner edge of the slide rail (61). In addition, the drive wheel (62) located at the end of the guide rod (36) of the movable plate is rotated, and the drive wheel (62) meshes with the rack (65); The drive wheel (63) installed at the end of the drive wheel (62) and the drive wheel (63) embedded on the outer ring (51) are fitted with a drive belt (64).

8. The automated bonding equipment for large-size touch screens according to claim 7, characterized in that, The ends of multiple first threaded rods (413) are all connected to the connecting plate (415).

9. The automated bonding equipment for large-size touch screens according to claim 4, characterized in that, The lower clamp (23) and the upper clamp (24) are locked together by a locking mechanism (70), which includes a slot (71) installed on the lower clamp (23) and a pin (72) installed on the upper clamp (24). A rotating rod (711) is rotatably provided inside the slot (71), and the surface of the rotating rod (711) is provided with a spiral pattern (712) and a second ratchet (713) is installed at the bottom. A movable seat (714) is installed at the bottom of the slot (71), and a second ratchet (715) that cooperates with the second ratchet (713) is provided inside the movable seat (714). The surface of the movable seat (714) is provided with a positioning groove (716), and the inner wall of the slot (71) is provided with a positioning block (717) that cooperates with the positioning groove (716). The bottom of the pin (72) is provided with a hole that mates with the rotating rod (711), and a spiral groove (722) that mates with the spiral pattern (712) is provided in the hole. The top of the pin (72) is provided with a countersunk hole (721) for other pins (72) to be inserted.

10. An automated pressing method for large-size touch screens, characterized in that, Includes the following steps: S1: Place the display screen (21) on the processing table (13), apply glue to the upper surface of the display screen (21), and then place the touch sensor (22) above the display screen (21) to complete the workpiece loading. S2: Start the conveyor mechanism (11), drive the processing table (13) to move horizontally, and drive the display screen (21) and the touch sensor (22) to be conveyed to the pressing workpiece below the pressure plate (14); S3: During the movement of the processing table, the guide mechanism (30) drives the two movable plates (37) to move laterally together through the cooperation of the inclined groove (34) and the movable plate guide rod (36); at the same time, the drive wheel (62) of the transmission mechanism (60) meshes with the rack (65) and rotates, driving the one-way mechanism (50) through the transmission belt (64), so that the first thread rod (413) is fed in a straight line, pushing the lower clamp (23) to the top opening of the first stacking box (411), and horizontally attaching it to the sides and four corners of the display screen (21) along with the movable plate; S4: The pressing mechanism (12) pushes the pressure plate (14) down, the upper clamp (24) fits against the touch sensor plate (22), the pin (72) of the locking mechanism (70) is inserted into the slot (71), the rotating rod (711) rotates under the guidance of the spiral groove (712) and the spiral groove (722), and the upper and lower clamps are rigidly locked by the one-way meshing of the second ratchet (713) and the second ratchet (715), and the glue extends and flows under pressure; S5: During the process of the pressure plate (14) rising and resetting, the one-way mechanism (50) of the upper clamp box (42) enters the locking state, drives the second threaded rod (425) to rotate, and causes the first internal threaded ring (424) to drive the second push plate (423) to feed downward, pushing an upper clamp (24) to the bottom opening of the second stacking box (422) to complete the feeding. S6: The processing table (13) drives the workpiece after locking and holding pressure to return to the loading position, and the lower clamp (23) disengages from the first stack box (411). When returning, the one-way mechanism rotates idly, and the lower clamp will not fall back. S7: The lower clamp (23) and the upper clamp (24) are rigidly locked together, and uniform pressure is continuously provided until the adhesive is completely cured; S8: Rotate and pull outward the movable seat (714) to disengage the second ratchet (715) from the second ratchet tooth (713), release the one-way lock, separate the lower clamp (23) and the upper clamp (24), and take out the finished product.

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